Pump jack



Sept. 14, 1926.

w. B. FLYNN PUMP JACK Filed Deo. 19. 1925 TO FUWER Patented Sept. 14,1926.

' j WILLIAM-, -oF'BEMrMoNm muxas; 1 f

Pime- Jecleif i .A

' mimetica altamente! L19, leas, ,Saaljiipirga11-i has'for its purposeto, generally improve *su/Chf,

construction, as well astol prfovide'a struc ture by which the powerisappliedin a direeHnew'th the bore: 0f, the Well.-y i

L further object of the invention, resides in the i eroi/islam' 'Ofiarman jack maladies a sprocket wheel mposed f'fa, disc qrwheel on tlfierim of which av "seriest of teeth yare de;-

tob extend around all; ora ,part of theiperlhleryvof the disc.

Anotherobjectqf the invention consists in providing a radiallyadjustable connection for the source of power whereby the stroke of thepump may be varied to suit the well with which it is in operation. i

A further object of the invention resides in the provision of aframework for the pump jack which is adjustable both vertically andhorizontally so as to provide proper adjustment of the working parts ofthe jack to the well.

Other objects and advantages of the in-' 'vention will be apparent fromthe following description when taken in connection with the accompanyingdrawings; in which-` Figure l1 is a side elevation of the jack inoperative association with a well. j Figure`2 is a fragmentary verticalsection taken on line 2-2 of Figure 1; and v Figure 3 is a detail planview of the chain to the source of power.

Referring to said drawings more in detail the numeral 1 indicates a pairof base members which are formed of eXtensible sections r2 and 3 whichare rendered adjustableby means of the set screws 4. These base members1 are placed above the well structure and have pivoted to the endsthereof asindicated by the numeral rthe upwardly inclined beams 6 whichare composed of the extensible sections 7 and 8 which may be secured inadjusted positionvby means of set screws 9. The beams 6 on the adjacentends of the base members 1 are connected by means of the horizontallydisposed rods 10 which are adjustably attached to the beams by means ofset screws 11. Bearing blocks 12, which form supports for the bearings13 of the gear wheel about to be described, are carried on the upperends of the beams 6 as clearly disclosed on Figure 1 of the drawv ino's.

lhe wheel 14 which forms an essential part of the invention may be madeof wood Se ferias fleeaiedlecessar I Oli other. suitable materfaliandmaybe in the folmlfeifoif? Wheel 01 in' the fQrm, of' awdisc.I In4 thel'present embodiment 'of 'the investies, oseillatls melriberf 1,4; iisdepicted l. 'SC land-s. P110,raided'l Withv av plurality of bill?, 1lGS, 1,51; adjacelltits,periphery forfthe as l reception:ofA bolts 16l'which detachably sc cure Ithe toothed segments, to' theperiph;

a i et?, Ot. tl1;fl,.S. -l Thessegments 'are placed mguitablv Securedthe' t teeth beingA adapted' Sarles, 0.11 thefdi'se 1,4 and may extend.en: tir@ la alouadatheperipl Yfther'eo @raoul-Y .i y. bviellsly, theSeamerita117'y nsteadsioi Qverl'apnae the. dise as shown might have4 aweb thereofi'nserted in a groove in the periphery of the disc, or

secured in any other desirable manner.

The well with which the pump jack is connected is indicated by thenumeral 18,

and the pump rod `thereof is attached to one `end of a chain 19, theopposite portion of the chain meshing with the teeth of the segments 17and having its free end engaged over the hook 20 formed on the remoteendofthe upper segment 17. y f

In a mechanismV for operating a pump rod it is desirable thatadjustments be available wherebyy the stroke of the rod may be varied tosuit the particular well. have provided the disc 14 witha'plurality ofbolt holes 21 which receive the bolts 22k shownin Figure 2 and whichrigidly clamp the toothed segments 23 to the opposite sides of the disc14. Only a single segment 23 is attached to each side of thev disc, `andthe ends of the segments remote from the source of power are `providedwith hooks 24 which receive the free ends of the doubleoperatingchain25, the adjacent portion of the chain meshing with teeth of segment23 and the remote end thereof being associated with a source of power(not shown). lTo vary the throw Vof the disc 14 and consequently vthe`stroke of the pump rod it will be apparent that the segments 23 may bemoved toward or from the periphery of the disc as maybe necessary.

From the foregoing description taken in connection with the accompanyingdrawings it will be seen that I have devised a rather simple andvinexpensive construction of pump jack which may be adjustably mountedwith respect to the well, and which may be adjusted as to throw so as toproduce the proper stroke of the pump rod. y In accordance with thepatent statutes I have described what I nowbelieve to be the To this endI j ico best embodiment of the invention, but I do not wish to beunderstood thereby as limiting myself or the scopeof the invention, asmany changes and modifications may be made without departing from thespirit of the invention; all such I aim to include in the scope of theappended claims. y

What I claim as new and desire to secure by Letters Patent is a l. Apump jack for wells yincluding a wheel supported over a well, meansope-ratively connecting said wheel with the Well pump, a radiallyadjustable toothed segment mounted on the wheel, a hook on one end ofsaid segment, and a chain engaging said hook and toothed segment andcon-- nected to a source of power.

2. A pumpvjack for wells including a disc supported. over a well, aplurality of toothed segments detachably secured to the periphery ofsaid disc, a hook on one end of one of said segments, a chain engagingsaid hook and the toothed segments, and means for oscillating said disc.

3. A pump jack for wells including a disc Supported over a Well, aplurality of toothed segments detachably secured to the periphery ofsaid disc, a hook on one end of one ot said segments, another toothedsegment adjustably mounted on a face of said disc, a hook on one end ofsaid last-named segment, and chains engaging each of said hooks andsegments and associated with a.

e of said base members, each beam formed of extensible sections, andbearings attached to the upper ends of said beams.

w. BQ FLYNN.

